[mythtv] missing cpu compile options in 7412?

[Chris Pinkham]

> Things like ./configure --cpu --tune --arch give me an error message
> when running configure after getting 7412.
> 
> Was this supposed to happen?

Should work now.  These options are parsed earlier in the configure
script so they don't need to be parsed in the main option parsing
code that prints the unknown option error message.  I committed
a fix for this so you should be able to run configure with these
options now.

-- 
Chris